<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <style>
        body {
            font-family: 'Arial', sans-serif;
            background-color: #f8f9fa;
            color: #333;
            text-align: center;
            padding: 50px 20px;
            margin: 0;
        }
        .container {
            max-width: 600px;
            margin: 0 auto;
        }
        h1 {
            font-size: 80px;
            margin: 0;
            color: #dc3545;
        }
        p {
            font-size: 18px;
            margin: 20px 0;
        }
        a {
            display: inline-block;
            padding: 10px 20px;
            background: #007bff;
            color: white;
            text-decoration: none;
            border-radius: 5px;
            transition: background 0.3s;
        }
        a:hover {
            background: #0056b3;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>404</h1>
        <p>哎呀！您访问的页面不存在。</p>
        <p>可能已被删除、移动或输入了错误的网址。</p>
        <a href="/">返回首页</a>
    </div>
</body>
</html>